Thrall…what?

Planet Stories Spring 1946 cover by

A strange rescue effected on this cover of Planet Stories (Spring 1946) by Harry Lemon Parkhurst (1876-1962). I have no vey clear idea what “thrallmery” means. The word does not appear in either Wiktionary or the Oxford English Dictionary. Henry Kuttner’s story “What Hath Me” has some rather surreal interior art by an artist identified only as “Hollingsworth.”

Interior art illustrating Harry Kuttner's story "What Hath Me" by an artist identified only as "Hollingsworth."

This issue of Planet Stories is available to read and download at the Internet Archive.